|Title||Polsarnet: A deep fully convolutional network for polarimetric sar image classification|
|Author(s)||Mullissa, Adugna G.; Persello, Claudio; Stein, Alfred|
|Source||IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 12 (2019)12. - ISSN 1939-1404 - p. 5300 - 5309.|
|Department(s)||Laboratory of Geo-information Science and Remote Sensing|
|Publication type||Refereed Article in a scientific journal|
|Keyword(s)||Convolutional neural network (CNN) - deep learning - image classification - machine learning - polarimetric SAR (PolSAR)|
Deep learning has successfully improved the classification accuracy of optical remote sensing images. Recent works attempted to transfer the success of these techniques to the microwave domain to classify Polarimetric SAR data. So far, most deep learning networks separate amplitude and phase as separate input images. In this article, we present a deep fully convolutional network that uses real-valued weight kernels to perform pixel-wise classification of complex-valued images. We evaluated the performance of this network by comparing it with support vector machine, Random Forest, complex-valued convolutional neural network (CV-CNN), and a network that uses amplitude and phase information separately as real channels. The evaluation was done on a quad-polarized AIRSAR image and a dual-polarimetric multitemporal Sentinel-1 data acquired over Flevoland, the Netherlands. The proposed method achieved higher accuracy compared to all other networks with the same architecture.